Question

When a piece of stone is dropped in a deep well,the sound of splash is heard 7.7s after it is dropped. If speed of sound is 343 m/s,find the depth of well.

Answer 1

Speed of sound = 343 m/s

Time = 7.7 s

Therefore, depth of well = Speed * Time = (343*7.7) m = 2641.1 m = 2.6411 km